Chinese Version
Home | About Journal | Editorial Board | Information for Authors | Copyright Transfer Statement | Contact us
Preparation and Cadmium Ion Sensing Properties of Ionic Imprinted Materials Based on HNTs
Author NameAffiliationE-mail
HU Ying-Lu College of Engineering, Zhejiang A & F University, Lin'an, Zhejiang 311300, China  
LU Wen-Jun Forestry and Biotechnology College, Zhejiang A & F University, Lin'an, Zhejiang 311300, China  
GUO Ming College of Engineering, Zhejiang A & F University, Lin'an, Zhejiang 311300, China
College of Science, Zhejiang A & F University, Lin'an, Zhejiang 311300, China 		guoming@zafu.edu.cn 
WANG Jue Forestry and Biotechnology College, Zhejiang A & F University, Lin'an, Zhejiang 311300, China  
Abstract: We used surface imprinting polymerization to prepare the sensing material HNTs@ⅡPs modified by hyperbranched imprinting polymers (HNTs=halloysite nanotubes). Fourier transform infrared spectroscopy (FTIR), XRD, SEM, nuclear magnetic and thermogravimetry proved that HNTs@ⅡPs was successfully synthesized. Then, we used cyclic voltammetry, differential pulse voltammetry and electrochemical impedance spectroscopy to investigate the electrochemical properties and specific sensing properties to cadmium ion of HNTs@ⅡPs. The results showed that when cCD2+≤ 0.125 μmol·L-1, the peak current of the sensing material had a good quantitative relationship with cCD2+, and the detection limit is 0.026 μmol·L-1. The imprinting factor was 5.97 and the selective factor was 4.97, which indicates that the HNTs@ⅡPs have specificity and strong selective adsorption to Cd2+. It suggests that HNTs@ⅡPs can be used to detect the concentration of Cd2+. The equivalent electrical circuit model of the sensor was obtained by fitting the results of impedance spectrum analysis and the sensing mechanism was analyzed and illustrated.
Keywords: halloysite nanotubes  sensing material  cadmium ions  specificity
Hits:  1107
Download times:  569
HU Ying-Lu,LU Wen-Jun,GUO Ming,WANG Jue.Preparation and Cadmium Ion Sensing Properties of Ionic Imprinted Materials Based on HNTs[J].Chinese Journal of Inorganic Chemistry,2019,35(10):1755-1766.
View Full Text  View/Add Comment  Download reader
Chinese Journal of Inorganic Chemistry